PERIOD 4 ELEMENT

A 'period 4 element' is one of the chemical elements in the fourth row (or ''period'') of the periodic table of the elements.
These are:

'Chemical elements in the fourth period'

Group	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
# Name	19 K	20 Ca	21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
e--conf.